rfcomm_socket.c revision 1.6
1 /* $NetBSD: rfcomm_socket.c,v 1.6 2007/03/31 18:17:13 plunky Exp $ */ 2 3 /*- 4 * Copyright (c) 2006 Itronix Inc. 5 * All rights reserved. 6 * 7 * Written by Iain Hibbert for Itronix Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. The name of Itronix Inc. may not be used to endorse 18 * or promote products derived from this software without specific 19 * prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY ITRONIX INC. ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ITRONIX INC. BE LIABLE FOR ANY 25 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 26 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 28 * ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 __KERNEL_RCSID(0, "$NetBSD: rfcomm_socket.c,v 1.6 2007/03/31 18:17:13 plunky Exp $"); 36 37 /* load symbolic names */ 38 #ifdef BLUETOOTH_DEBUG 39 #define PRUREQUESTS 40 #define PRCOREQUESTS 41 #endif 42 43 #include <sys/param.h> 44 #include <sys/domain.h> 45 #include <sys/kernel.h> 46 #include <sys/mbuf.h> 47 #include <sys/proc.h> 48 #include <sys/protosw.h> 49 #include <sys/socket.h> 50 #include <sys/socketvar.h> 51 #include <sys/systm.h> 52 53 #include <netbt/bluetooth.h> 54 #include <netbt/rfcomm.h> 55 56 /**************************************************************************** 57 * 58 * RFCOMM SOCK_STREAM Sockets - serial line emulation 59 * 60 */ 61 62 static void rfcomm_connecting(void *); 63 static void rfcomm_connected(void *); 64 static void rfcomm_disconnected(void *, int); 65 static void *rfcomm_newconn(void *, struct sockaddr_bt *, struct sockaddr_bt *); 66 static void rfcomm_complete(void *, int); 67 static void rfcomm_input(void *, struct mbuf *); 68 69 static const struct btproto rfcomm_proto = { 70 rfcomm_connecting, 71 rfcomm_connected, 72 rfcomm_disconnected, 73 rfcomm_newconn, 74 rfcomm_complete, 75 rfcomm_input, 76 }; 77 78 /* sysctl variables */ 79 int rfcomm_sendspace = 4096; 80 int rfcomm_recvspace = 4096; 81 82 /* 83 * User Request. 84 * up is socket 85 * m is either 86 * optional mbuf chain containing message 87 * ioctl command (PRU_CONTROL) 88 * nam is either 89 * optional mbuf chain containing an address 90 * ioctl data (PRU_CONTROL) 91 * optionally protocol number (PRU_ATTACH) 92 * message flags (PRU_RCVD) 93 * ctl is either 94 * optional mbuf chain containing socket options 95 * optional interface pointer (PRU_CONTROL, PRU_PURGEIF) 96 * l is pointer to process requesting action (if any) 97 * 98 * we are responsible for disposing of m and ctl if 99 * they are mbuf chains 100 */ 101 int 102 rfcomm_usrreq(struct socket *up, int req, struct mbuf *m, 103 struct mbuf *nam, struct mbuf *ctl, struct lwp *l) 104 { 105 struct rfcomm_dlc *pcb = up->so_pcb; 106 struct sockaddr_bt *sa; 107 struct mbuf *m0; 108 int err = 0; 109 110 DPRINTFN(2, "%s\n", prurequests[req]); 111 112 switch (req) { 113 case PRU_CONTROL: 114 return EPASSTHROUGH; 115 116 case PRU_PURGEIF: 117 return EOPNOTSUPP; 118 119 case PRU_ATTACH: 120 if (pcb != NULL) 121 return EINVAL; 122 123 /* 124 * Since we have nothing to add, we attach the DLC 125 * structure directly to our PCB pointer. 126 */ 127 err = rfcomm_attach((struct rfcomm_dlc **)&up->so_pcb, 128 &rfcomm_proto, up); 129 if (err) 130 return err; 131 132 err = soreserve(up, rfcomm_sendspace, rfcomm_recvspace); 133 if (err) 134 return err; 135 136 err = rfcomm_rcvd(up->so_pcb, sbspace(&up->so_rcv)); 137 if (err) 138 return err; 139 140 return 0; 141 } 142 143 if (pcb == NULL) { 144 err = EINVAL; 145 goto release; 146 } 147 148 switch(req) { 149 case PRU_DISCONNECT: 150 soisdisconnecting(up); 151 return rfcomm_disconnect(pcb, up->so_linger); 152 153 case PRU_ABORT: 154 rfcomm_disconnect(pcb, 0); 155 soisdisconnected(up); 156 /* fall through to */ 157 case PRU_DETACH: 158 return rfcomm_detach((struct rfcomm_dlc **)&up->so_pcb); 159 160 case PRU_BIND: 161 KASSERT(nam != NULL); 162 sa = mtod(nam, struct sockaddr_bt *); 163 164 if (sa->bt_len != sizeof(struct sockaddr_bt)) 165 return EINVAL; 166 167 if (sa->bt_family != AF_BLUETOOTH) 168 return EAFNOSUPPORT; 169 170 return rfcomm_bind(pcb, sa); 171 172 case PRU_CONNECT: 173 KASSERT(nam != NULL); 174 sa = mtod(nam, struct sockaddr_bt *); 175 176 if (sa->bt_len != sizeof(struct sockaddr_bt)) 177 return EINVAL; 178 179 if (sa->bt_family != AF_BLUETOOTH) 180 return EAFNOSUPPORT; 181 182 soisconnecting(up); 183 return rfcomm_connect(pcb, sa); 184 185 case PRU_PEERADDR: 186 KASSERT(nam != NULL); 187 sa = mtod(nam, struct sockaddr_bt *); 188 nam->m_len = sizeof(struct sockaddr_bt); 189 return rfcomm_peeraddr(pcb, sa); 190 191 case PRU_SOCKADDR: 192 KASSERT(nam != NULL); 193 sa = mtod(nam, struct sockaddr_bt *); 194 nam->m_len = sizeof(struct sockaddr_bt); 195 return rfcomm_sockaddr(pcb, sa); 196 197 case PRU_SHUTDOWN: 198 socantsendmore(up); 199 break; 200 201 case PRU_SEND: 202 KASSERT(m != NULL); 203 204 if (ctl) /* no use for that */ 205 m_freem(ctl); 206 207 m0 = m_copypacket(m, M_DONTWAIT); 208 if (m0 == NULL) 209 return ENOMEM; 210 211 sbappendstream(&up->so_snd, m); 212 213 return rfcomm_send(pcb, m0); 214 215 case PRU_SENSE: 216 return 0; /* (no release) */ 217 218 case PRU_RCVD: 219 return rfcomm_rcvd(pcb, sbspace(&up->so_rcv)); 220 221 case PRU_RCVOOB: 222 return EOPNOTSUPP; /* (no release) */ 223 224 case PRU_LISTEN: 225 return rfcomm_listen(pcb); 226 227 case PRU_ACCEPT: 228 KASSERT(nam != NULL); 229 sa = mtod(nam, struct sockaddr_bt *); 230 nam->m_len = sizeof(struct sockaddr_bt); 231 return rfcomm_peeraddr(pcb, sa); 232 233 case PRU_CONNECT2: 234 case PRU_SENDOOB: 235 case PRU_FASTTIMO: 236 case PRU_SLOWTIMO: 237 case PRU_PROTORCV: 238 case PRU_PROTOSEND: 239 err = EOPNOTSUPP; 240 break; 241 242 default: 243 UNKNOWN(req); 244 err = EOPNOTSUPP; 245 break; 246 } 247 248 release: 249 if (m) m_freem(m); 250 if (ctl) m_freem(ctl); 251 return err; 252 } 253 254 /* 255 * rfcomm_ctloutput(request, socket, level, optname, opt) 256 * 257 */ 258 int 259 rfcomm_ctloutput(int req, struct socket *so, int level, 260 int optname, struct mbuf **opt) 261 { 262 struct rfcomm_dlc *pcb = so->so_pcb; 263 struct mbuf *m; 264 int err = 0; 265 266 DPRINTFN(2, "%s\n", prcorequests[req]); 267 268 if (pcb == NULL) 269 return EINVAL; 270 271 if (level != BTPROTO_RFCOMM) 272 return ENOPROTOOPT; 273 274 switch(req) { 275 case PRCO_GETOPT: 276 m = m_get(M_WAIT, MT_SOOPTS); 277 m->m_len = rfcomm_getopt(pcb, optname, mtod(m, void *)); 278 if (m->m_len == 0) { 279 m_freem(m); 280 m = NULL; 281 err = ENOPROTOOPT; 282 } 283 *opt = m; 284 break; 285 286 case PRCO_SETOPT: 287 m = *opt; 288 KASSERT(m != NULL); 289 err = rfcomm_setopt(pcb, optname, mtod(m, void *)); 290 m_freem(m); 291 break; 292 293 default: 294 err = ENOPROTOOPT; 295 break; 296 } 297 298 return err; 299 } 300 301 /********************************************************************** 302 * 303 * RFCOMM callbacks 304 */ 305 306 static void 307 rfcomm_connecting(void *arg) 308 { 309 /* struct socket *so = arg; */ 310 311 KASSERT(arg != NULL); 312 DPRINTF("Connecting\n"); 313 } 314 315 static void 316 rfcomm_connected(void *arg) 317 { 318 struct socket *so = arg; 319 320 KASSERT(so != NULL); 321 DPRINTF("Connected\n"); 322 soisconnected(so); 323 } 324 325 static void 326 rfcomm_disconnected(void *arg, int err) 327 { 328 struct socket *so = arg; 329 330 KASSERT(so != NULL); 331 DPRINTF("Disconnected\n"); 332 333 so->so_error = err; 334 soisdisconnected(so); 335 } 336 337 static void * 338 rfcomm_newconn(void *arg, struct sockaddr_bt *laddr, 339 struct sockaddr_bt *raddr) 340 { 341 struct socket *so = arg; 342 343 DPRINTF("New Connection\n"); 344 so = sonewconn(so, 0); 345 if (so == NULL) 346 return NULL; 347 348 soisconnecting(so); 349 350 return so->so_pcb; 351 } 352 353 /* 354 * rfcomm_complete(rfcomm_dlc, length) 355 * 356 * length bytes are sent and may be removed from socket buffer 357 */ 358 static void 359 rfcomm_complete(void *arg, int length) 360 { 361 struct socket *so = arg; 362 363 sbdrop(&so->so_snd, length); 364 sowwakeup(so); 365 } 366 367 /* 368 * rfcomm_input(rfcomm_dlc, mbuf) 369 */ 370 static void 371 rfcomm_input(void *arg, struct mbuf *m) 372 { 373 struct socket *so = arg; 374 375 KASSERT(so != NULL); 376 377 if (m->m_pkthdr.len > sbspace(&so->so_rcv)) { 378 printf("%s: %d bytes dropped (socket buffer full)\n", 379 __func__, m->m_pkthdr.len); 380 m_freem(m); 381 return; 382 } 383 384 DPRINTFN(10, "received %d bytes\n", m->m_pkthdr.len); 385 386 sbappendstream(&so->so_rcv, m); 387 sorwakeup(so); 388 } 389
Indexes created Thu Sep 25 08:09:54 GMT 2025